With the Norton T489 waterproof sanding sheet, you achieve a smooth and consistent finish on steel, paint, lacquer, and fillers. Thanks to the flexible 230X280 mm backing, you easily follow contours and curved surfaces without tearing the sheet. The waterproof paper backing allows for wet sanding, preventing clogging and minimizing dust during preparation. Featuring sharp silicon carbide grain in grit P180, it quickly levels imperfections to provide optimal adhesion for new paint layers. Whether working dry or wet, by hand or with a sanding block, you work with precision and control towards a flawless surface.